fix decimal (#479)

[bytom/vapor.git] / application / mov / match / match_test.go

diff --git a/application/mov/match/match_test.go b/application/mov/match/match_test.go
index 640f4cf..7d013ec 100644 (file)
--- a/application/mov/match/match_test.go
+++ b/application/mov/match/match_test.go
@@ -256,3 +256,163 @@ func TestValidateTradePairs(t *testing.T) {
                }
        }
 }
+
+func TestIsMatched(t *testing.T) {
+       cases := []struct {
+               desc        string
+               orders      []*common.Order
+               wantMatched bool
+       }{
+               {
+                       desc: "ratio is equals",
+                       orders: []*common.Order{
+                               {
+                                       FromAssetID:      &mock.BTC,
+                                       ToAssetID:        &mock.ETH,
+                                       RatioNumerator:   6250,
+                                       RatioDenominator: 3,
+                               },
+                               {
+                                       FromAssetID:      &mock.ETH,
+                                       ToAssetID:        &mock.BTC,
+                                       RatioNumerator:   3,
+                                       RatioDenominator: 6250,
+                               },
+                       },
+                       wantMatched: true,
+               },
+               {
+                       desc: "ratio is equals, and numerator and denominator are multiples of the opposite",
+                       orders: []*common.Order{
+                               {
+                                       FromAssetID:      &mock.BTC,
+                                       ToAssetID:        &mock.ETH,
+                                       RatioNumerator:   6250,
+                                       RatioDenominator: 3,
+                               },
+                               {
+                                       FromAssetID:      &mock.ETH,
+                                       ToAssetID:        &mock.BTC,
+                                       RatioNumerator:   9,
+                                       RatioDenominator: 18750,
+                               },
+                       },
+                       wantMatched: true,
+               },
+               {
+                       desc: "matched with a slight diff",
+                       orders: []*common.Order{
+                               {
+                                       FromAssetID:      &mock.BTC,
+                                       ToAssetID:        &mock.ETH,
+                                       RatioNumerator:   62500000000000000,
+                                       RatioDenominator: 30000000000001,
+                               },
+                               {
+                                       FromAssetID:      &mock.ETH,
+                                       ToAssetID:        &mock.BTC,
+                                       RatioNumerator:   3,
+                                       RatioDenominator: 6250,
+                               },
+                       },
+                       wantMatched: true,
+               },
+               {
+                       desc: "not matched with a slight diff",
+                       orders: []*common.Order{
+                               {
+                                       FromAssetID:      &mock.BTC,
+                                       ToAssetID:        &mock.ETH,
+                                       RatioNumerator:   62500000000000001,
+                                       RatioDenominator: 30000000000000,
+                               },
+                               {
+                                       FromAssetID:      &mock.ETH,
+                                       ToAssetID:        &mock.BTC,
+                                       RatioNumerator:   3,
+                                       RatioDenominator: 6250,
+                               },
+                       },
+                       wantMatched: false,
+               },
+               {
+                       desc: "ring matched",
+                       orders: []*common.Order{
+                               {
+                                       FromAssetID:      &mock.BTC,
+                                       ToAssetID:        &mock.ETH,
+                                       RatioNumerator:   2000000003,
+                                       RatioDenominator: 100000001,
+                               },
+                               {
+                                       FromAssetID:      &mock.ETH,
+                                       ToAssetID:        &mock.EOS,
+                                       RatioNumerator:   400000000001,
+                                       RatioDenominator: 2000000003,
+                               },
+                               {
+                                       FromAssetID:      &mock.EOS,
+                                       ToAssetID:        &mock.BTC,
+                                       RatioNumerator:   100000001,
+                                       RatioDenominator: 400000000001,
+                               },
+                       },
+                       wantMatched: true,
+               },
+               {
+                       desc: "ring matched with a slight diff",
+                       orders: []*common.Order{
+                               {
+                                       FromAssetID:      &mock.BTC,
+                                       ToAssetID:        &mock.ETH,
+                                       RatioNumerator:   2000000003,
+                                       RatioDenominator: 100000001,
+                               },
+                               {
+                                       FromAssetID:      &mock.ETH,
+                                       ToAssetID:        &mock.EOS,
+                                       RatioNumerator:   400000000001,
+                                       RatioDenominator: 2000000003,
+                               },
+                               {
+                                       FromAssetID:      &mock.EOS,
+                                       ToAssetID:        &mock.BTC,
+                                       RatioNumerator:   100000000,
+                                       RatioDenominator: 400000000001,
+                               },
+                       },
+                       wantMatched: true,
+               },
+               {
+                       desc: "ring fail matched with a slight diff",
+                       orders: []*common.Order{
+                               {
+                                       FromAssetID:      &mock.BTC,
+                                       ToAssetID:        &mock.ETH,
+                                       RatioNumerator:   2000000003,
+                                       RatioDenominator: 100000001,
+                               },
+                               {
+                                       FromAssetID:      &mock.ETH,
+                                       ToAssetID:        &mock.EOS,
+                                       RatioNumerator:   400000000001,
+                                       RatioDenominator: 2000000003,
+                               },
+                               {
+                                       FromAssetID:      &mock.EOS,
+                                       ToAssetID:        &mock.BTC,
+                                       RatioNumerator:   100000002,
+                                       RatioDenominator: 400000000001,
+                               },
+                       },
+                       wantMatched: false,
+               },
+       }
+
+       for i, c := range cases {
+               gotMatched := IsMatched(c.orders)
+               if gotMatched != c.wantMatched {
+                       t.Errorf("#%d(%s) got matched:%v, want matched:%v", i, c.desc, gotMatched, c.wantMatched)
+               }
+       }
+}